The ISP Column
An occasional column on things Internet
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Mutterings on MTUs
February 2009

Geoff Huston

The MTU Question

Packet Overheads and MTU

TCP Performance and MTU size

TCP Slow Start

Buffer Constrained TCP

TCP Congestion Avoidance

TCP Rate Equation


The above views do not necessarily represent the views of the Asia Pacific Network Information Centre.

About the Author

GEOFF HUSTON holds a B.Sc. and a M.Sc. from the Australian National University. He has been closely involved with the development of the Internet for many years, particularly within Australia, where he was responsible for the initial build of the Internet within the Australian academic and research sector. He is author of a number of Internet-related books, and is currently the Chief Scientist at APNIC, the Regional Internet Registry serving the Asia Pacific region. He was a member of the Internet Architecture Board from 1999 until 2005, and served on the Board of the Internet Society from 1992 until 2001.